Know that your feelings are completely valid, always. Your emotions are your own, and they're important because they're important to you. You have the right to feel whatever emotions you feel at any given time. And you're not wrong for feeling a certain way.
I know many of us have had to deal with teasing and harassment over the hobbies we dearly love. People may say you're "too old" to participate in certain hobbies. They may accuse you of being silly and childish for doing so. But, just remember, you should never feel ashamed of your hobbies. They are part of you and make up who you are as a person. Don't feel ashamed, embarrassed, or sorry for the things you love. Continue doing what you love, always.
You may feel like all your hard work doesn't count towards anything. You may think your hobbies are unproductive and a waste of time. But, your hobbies are completely valid as long as you enjoy them. Something doesn't have to be productive to be worthwhile. And although it may not always feel like it, your work is appreciated. Somewhere in the world, there are people who care about what you do and the effort you put into it. Just remember, the things you do, the hobbies you enjoy, and the work you create, it all matters.
It may feel like your voice isn't being heard, like you as an individual don't matter in the scope of the world. Just know this. You do matter as a person, and your voice matters. You being here does make a difference in the world.
Remember, it's always okay to take a break if you need to. Taking care of your personal health and well-being is very, very important; that should always come first. If you need to take a step back from social media, if you need to tune out of the news, if you need to just take a moment for yourself, then feel free to do so.